That vehicle will comfortably tow any Airstream in the fleet (well, maybe not the 33) The larger you go, the greater the tongue weight which will impinge upon what you can carry.
I towed a 31’ Sovereign
for some 80000 miles with a 2004 Nissan Titan. Never had a “white knuckle” moment, Went practically everywhere. My only limitation was that I could not carry more than 250# of stuff in the truck (besides the two humans)
And that truck had nowhere near the torque your eco boost has. The only upgrade to the Titan was aftermarket slotted disks.
Your F150 has similar numbers to the 3/4 ton pickups of just a few years ago. It is a very capable tow vehicle indeed.